Show the matrix form of a matrix:

Show the matrix form of a SparseArray:

Show vector, matrix, and general arrays in matrix form:

Matrices of numbers and formulas:

A matrix of lists:

Use options to control the layout directions:

Format a SparseArray object in matrix form:

Format a SymmetrizedArray object in matrix form:

Display special matrices with matrix formatting:

Matrices from a matrix decomposition:

Formula for a matrix multiplication:

Display a block matrix as a matrix of matrices:

The array flattened to a matrix:

MatrixForm formats arrays using standard matrix formatting:

TableForm formats arrays in a tabular form:

Grid formats two-dimensional arrays as a grid:

Use MatrixPlot to visualize the structure of large matrices:

Use ArrayPlot to visualize the structure of large discrete matrices:

Use Style to affect the display of MatrixForm:

Use any number form such as ScientificForm or BaseForm to affect the display of numbers:

The typeset form of MatrixForm[expr] is interpreted the same as expr when used in input:

Copy the output and paste it into an input cell. The (

1	2
3	4

) is interpreted as {{1,2},{3,4}}:

When an input evaluates to MatrixForm[expr], MatrixForm does not appear in the output:

Out is assigned the value {{1,2},{3,4}}, not MatrixForm[{{1,2},{3,4}}]:

Even when an output omits MatrixForm from the top level, it is not stripped from subexpressions:

The output does not have MatrixForm in it:

However, the variable e does have MatrixForm in it, which may affect subsequent evaluations:

The determinant is not evaluated due to the intervening MatrixForm:

Assign variables first and then apply MatrixForm to the result to maintain computability: